Electrically heated paint remover



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ELECTRICALLY HEATED PAINT REMOVER OriginaLFiled Feb. 16, 1948 2Sheets-Sheet 2 27 IIIIIIIIII 9323 I I I I I I 2/ 29 22 Z;

' -z4 /e I I I I I I. I I I 22 INVENTOR.

A; 7/ 072A Jar/zno,

3, BY awjmva A'ITD RN EYE Patented Feb. 14, 1950 ELECTRICALLY HEATEDPAINT Frank Carlino, Buffalo, N.

Continuation of application Serial No. 8,709, Feb- ,ruary'lG, 1948. Thisapplication September 28,

1948, Serial'No. 51,622

.6 Claims. (Cl. 219-29) This applicationis a continuation of myapplication for patent for electrically heated paint removers, SerialNo. 3,709, filed February 16, 1948, now abandoned.

This invention relates to paint removers of the type which combineselectric resistance elements for developing heat which is directly uponthe painted surface in order to bring the paint to a plastic conditionand a scraper for the removal of the paint so conditioned.

In the constructions heretofor rcposed there has been no adequateprovision for the protection of the heating elements against theaccumulation upon them of flying particles liberated from the paintedsurface and no adequate provision for maintaining the scraper at atemperature which will insure the effective removal of the softened orpiasticized paint.

The object of the invention is to provide a paint remover of the typeset forth wherein the electrical heating elements areadequatelyprotected and the means for the protection of the heatingelements serves to distribute the heat uniformly to the painted surfaceand also serves to conduct the heat in adequate degree to the scraper,the construction otherwise being adequately protected against the heatdeveloped by the heating elements.

In the accompanying drawing:

Figure l is a View showing a side elevation of the paint remover.

Figure 2 is a view looking forward toward the under side of the paintremover.

Figure 3 is a plan view of the paint remover.

Figure 4 is a view similar to that shown in Figure 2 with the protectinggrid under the heating element removed.

Figure 5 is a cross section through the paint remover taken on line 55of Figure 2.

Figure 6 is along'itudinal sectional view through the paint removertaken on line fi5 of Figure 2.

Figure 7 is a fragmentary bottom plan View of an insulating plate whichincluded in the modified construction and is'formed with a channel toaccommodate the heating element.

Figure 8 is a sectional View on the line 18t of Figure '7.

Theheating element l6, .of'any suitable convoluted form, is arrangedwithin a casing ll having an outer wall Ha in a plane parallel to theplane of the surface from which the paint is to be removed, side wallsl5 and It, a rear end wall H, and a front end wall which, in theconstruction shown, includes an outer sec-- tion it, directly associatedwith the walls Ho,

l5 and it, and an inner section it. The section 12 is continuation ofthe section it and is formed to provide the scraper, for this purposehaving -opriate forward inclination and a blade-like free edge. At itsinner side the casing is the open area being trained by the walls 5, itand ii and the section l2 and providin r the transmission of radiantheat to the painted surface.

The device is moved over the painted surface in the r nner i a sadironand for this purpose carries a i. suitably secured, for example screwsthe wall lla.

In order that the wall He may be protected from the heat developed bythe element H) a heat insulating plate 2% is interposed between .thewall and the element. The element it is supported a plate 22 arrangedunder the plate 26 and mounted in suitable eyes or hangers 21' securedto and projecting inward from the plate 22. i The plates 22 arepreferably connected as a unit which is supported in any suitable mannerfrom the walls of the casing. As shown the plate 29 projects at its rearend beyond the plate and the latter projects at its front end beyond theplate The nuts 27 and 28 which secure the contact stems 25 and as may bead.- vantageously utilized for the support of the unit at its rear end,the projecting portion of the plate 20 resting upon these nuts; and thefront end of the unit is supported by fingers 29 carried by andprojecting inward from the front wall section it, the forwardlyprojecting portion of the plate 22 resting upon these fingers.

The heating element it is adequately protected against the accumulationof flying particles liberated from the painted surfaces by a plate 13 ofscreen iii-1e character, preferably an integral plate having closelyassociated openings 36 formed by punching. The plate is is locatedinwardly of,

and in suitably spaced relation to, the heating l which adjoin, and aresuitably plate and the walls l5 and i2 is heated to a suitable degreepose the plate I3 is in heat conducting relation to the scraper l2 andis preferably formed integral with it, the scraper l2 projecting fromthe plate 13 at a suitable forward and downward angle.

The plate I3 is directly subject to the heat developed by the elementl0, storing and radiating it, and effects the uniform distribution ofheat upon the painted surface in order to loosen and plasticize thepaint, such heat being that which is directly delivered by the plate l3and also the radiant heat of the element In via the openings 30. Theplate [3 substantially protects the heating element against liberatedflying particles of damaging character; and suitable heat, as aboveexplained, is transmitted by the plate l3 to the scraper l2 in orderthat the latter may operate at a temperature which will insure its rapidand effective action in the removal of paint.

The device is held, or slowly moved, over the painted surface in orderto soften and loosen the paint and when this has been sufficientlyaccomplished over a suitable area the device is given one or morestrokes in the manner of a sadiron in order to effect the removal of thesoftened and loosened paint by the heated scraper In the modificationillustrated in Figures 7 and 8 a heating element 35 is mounted inopenings 36 in an insulating plate 31 which may be used in place of thelower plate 22, and it will be understood that a heating element of anysuitable type may be used and it may be installed in the casing in anymanner.

I claim:

1. An electrically heated paint remover comprising a shallowrectangular-shaped box-like casing with the under side open and with theforward wall inclined, an insulating plate positioned in the upper partof the casing, a heating element suspended below the said insulatedplate, and a perforated grid removably mounted in the casing and spacedfrom and positioned below the said heating element, said grid having adownwardly inclined scraper at the forward end thereof integraltherewith and positioned parallel to and in engagement with the inclinedforward wall of the casing.

2. In an electrically heated paint remover, the combination, whichcomprises, a box-like casing with the under surface open and having aninclined forward wall, a handle on said casing, an upper insulatingplate positioned against the upper surface of the casing, a lowerinsulating plate having depending eyes therein, a heating elementsupported in the said depending eyes, a

plug connection for the heating element, a perforated grid withdownwardly extending flanges at the sides and having a scraper on theforward edge spaced from and positioned below the heating element, andmeans removably mounting the said grid and scraper in the casing.

3. An electrically heated paint remover comprising a shallow casing withthe under side open, a heating element suspended in the upper part ofthe casing, and a perforated grid spaced from and positioned below thesaid heating element with a sharp scraping edge integral therewith andextending downwardly to a plane corre-' sponding with the lower surfaceof the casing.

4. An electrically heated paint remover comprising a shallow casing withthe under side open, an insulating plate positioned in. the upper partof the casing, a heating element carried by wire stirrup-like elementsfrom the insulated plate and positioned below said plate, a perforatedgrid spaced from and positioned below the said heating element andhaving a scraping edge integral therewith, means removably mounting saidgrid in the casing, and a handle mounted on the casing and spacedtherefrom.

5. An electrically heated paint remover comprising a casing having a topwall and rear, side and front Walls projecting downwardly from the topwall and which frame an open bottom heat applying area, the front wallincluding an outer section which is directly connected to the top walland a forwardly and downwardly inclined scraper element as acontinuation of the outer section, said scraper element having asuitable scraping edge, a heating element supported within the casingand a perforated plate of screen-like character spaced from andpositioned below the heating element, the plate being subject to theheat of the heating element, protecting it against liberated flyingparticles of damaging character, and effecting substantially uniformdistribution of heat through the open area, the plate being mounted inheat conducting relation to the scraper element and serving to heat thescraper element to a degree such that said scraper element will quicklyand thoroughly remove paint as softened and loosened by the heatdelivered through said open area.

6. An electrically heated paint remover comprising a casing having a topwall and rear, side and front walls projecting downwardly from the topwall and which frame an open bottom heat applying area, the front wallincluding an outer section which is directly connected to the top walland a forwardly and downwardly inclined scraper element as acontinuation of the outer section, said scraper element having asuitable scraping edge, a heating element supported within the casing, aperforated plate of screen-like character spaced from and positionedbelow the heating element, the plate being subject to the heat of 45 theheating element, protecting it against liberated flying particles ofdamaging character,

and effecting substantially uniform distribution of heat through theopen area, the plate being mounted in heat conducting relation to the 50scraper element and serving to heat the scraper element to a degree suchthat said scraper element will quickly and thoroughly remove paint assoftened and loosened by the heat delivered through said open area and aheat insulating 55 plate interposed between the heating element and thetop wall and serving for the support of the heating element.

FRANK CARLINO.

REFERENCES CITED The following references are of record in the file ofthis patent:

UNITED STATES PATENTS-

